MC68332ACEH25 - 32-Bit 25MHz CPU32 MCU, 132-PQFP | NXP
料号： MC68332ACEH25 ⚠ 最后一次采购| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $59.24 | $59.24 |
| 10 | $53.32 | $533.20 |
| 100 | $47.39 | $4,739.00 |
| 500 | $41.46 | $20,730.00 |
| 1,000 | $35.54 | $35,540.00 |
MC68332ACEH25 概述
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, memory, and programmable peripherals around an internal bus. The M68300 family is built from standardized modules - CPU32, SIM, TPU, QSM, and others - communicating through the IMB. This modular architecture let Freescale/NXP reuse verified IP blocks across automotive and industrial SKUs while letting customers add application-specific peripherals externally. Within the power-management and embedded hierarchy, the MC68332 sits as an automotive-grade 32-bit MCU family between 8/16-bit legacy controllers and the higher-performance ColdFire successors.
Key features of the MC68332ACEH25 include the CPU32 core (true 32-bit internal architecture, 32-bit external data bus), 25 MHz system clock, 2 KB of on-chip SRAM, ROMless external-memory interface, 16-channel TPU for microsecond-accurate timing events, QSM with queued SPI and SCI/UART, and a 2 KB system integration RAM with chip-select logic. The SIM provides the external bus interface, DRAM/ROM/SRAM controllers, and system-protection features. The part is specified at 5 V supply and 25 MHz and is qualified to automotive-grade temperature and quality standards.
Typical applications include automotive engine control units (ECU), anti-lock braking systems (ABS), industrial motion control, and aerospace/avionics subsystems. The TPU makes the device especially well-suited to event-driven timing tasks such as crank/cam tooth decoding, PWM generation, and stepper motor sequencing. Legacy industrial controllers using M68300 firmware can extend their lifecycle by continuing to source the ACEH25 speed grade.
When designing with the MC68332ACEH25, route the 5 V analog and digital supplies separately and place bulk decoupling within 25 mm of the PQFP power pins; the 132-pin footprint requires thermal relief vias under the die-attach pad when used in high-cavity automotive enclosures. Firmware written for the CPU32 is forward-compatible with ColdFire V1 at the source level after recompilation.
直接替换替代料： MC68332ACEH25 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： MC68332ACEH25 （相同外形与封装尺寸） ——差异在于 Package, Core, Program Memory Type, Maximum Clock Frequency, Peripherals.
快速对比工具——选择替代料号进行并排对比：
MC68332ACEH20
✅ 直接替换📋 参考替代料（不在目录中）
MC68332AVEH25
✅ 直接替换📋 参考替代料（不在目录中）
MC68332GCEH20
✅ 直接替换📋 参考替代料（不在目录中）
MC68332ACEH16
✅ 直接替换✓ 有现货
$40.34 / 个
查看数据手册 →MC68332VFC20
✅ 直接替换📋 参考替代料（不在目录中）
MC68332ACFC20
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$19.8 / 个
查看数据手册 →MC68332ACEH25 最大额定值与电气特性
| Core | CPU32 (M68300 family, 32-bit) |
| Processor Series | M683xx (CPU32) |
| 最大时钟频率 | 25 MHz |
| 数据总线宽度 | 32 bit |
| Program Memory Type | ROMless (external memory required) |
| On-chip SRAM | 2 KB |
| 电源电压 | 5 V |
| 工作温度范围 | -40C to +85C (automotive) |
| 封装 | 132-PQFP (24.13 x 24.13 mm) |
| 安装类型 | Surface Mount |
| Peripheral Modules | CPU32, SIM, TPU, QSM (via IMB) |
| Timers / TPU Channels | 16 channels (TPU) |
| Serial Interfaces | QSM (queued SPI + SCI/UART) |
| RoHS 状态 | Non-compliant (legacy part) |
| Automotive Grade | Yes (AEC-Q100 qualified family) |
MC68332ACEH25 132-pqfp (24.13 x 24.13 mm) 引脚配置指南
MC68332ACEH25（132-pqfp (24.13 x 24.13 mm) 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： MC68332ACEH25.
请参阅 数据手册 以查看完整引脚配置。
典型应用
MC68332ACEH25 适用于 7 应用s: Automotive Engine Control Unit (ECU), Anti-lock Braking System (ABS) Controller, Industrial Motion Controller, Aerospace Avionics Subsystem, Medical Diagnostic Equipment, Legacy Industrial PLC Module, Automotive Body Control Module.
Automotive Engine Control Unit (ECU)
The MC68332ACEH25's 25 MHz CPU32 core and 16-channel TPU make it a proven choice for automotive engine control units where deterministic microsecond-level timing is required. The TPU offloads crank/cam tooth decoding, fuel-injection PWM, and idle-speed control from the CPU, allowing the ECU to manage multi-cylinder ignition sequencing at 25 MHz without timing jitter. With 2 KB on-chip SRAM for stack and live data plus ROMless external memory for the calibration tables, the ACEH25 supports OBD-II diagnostic stacks while the 5 V supply rail matches automotive 12 V battery systems after regulator conditioning. Operating over -40C to +85C, it survives under-hood thermal stress in cabin and chassis-mounted ECU locations. NXP's AEC-Q100 qualification and decade-long production track record make it a low-risk choice for long-lifecycle automotive platforms.
推荐
Anti-lock Braking System (ABS) Controller
The MC68332ACEH25 has been widely deployed in ABS/ESC modules because its TPU channels can sample wheel-speed sensor inputs at sub-millisecond intervals while the CPU32 handles control-law computation. The 32-bit external data bus allows direct attachment of external SRAM for wheel-speed history buffers without wait-state insertion. At 25 MHz the device completes a 4-wheel ABS control loop well within the 5 ms cycle time mandated by ISO 26262 ASIL-B braking standards. The 132-pin PQFP package gives enough I/O for 4 wheel-speed inputs, 4 solenoid outputs, and CAN/K-line diagnostic interfaces, while the 5 V supply and -40C to +85C operating range match chassis-mounted ABS enclosures. NXP's long-term silicon reliability and pin-compatible M68332 family variants support 15+ year ABS program lifetimes.
推荐
Industrial Motion Controller
The MC68332ACEH25's 16-channel TPU and QSM (queued SPI/UART) make it well-suited to industrial motion controllers driving stepper motors, servo amplifiers, and incremental encoders. The TPU handles quadrature-decoder input for up to 4 axes, while the CPU32 runs the position-loop and trajectory-generation code stored in external Flash. The ROMless design lets industrial OEMs keep firmware in external Flash for field updates, and the 132-pin PQFP exposes enough I/O for limit-switch inputs, enable outputs, and an RS-485/Modbus interface through the QSM SCI channel. At 25 MHz the device delivers 6.7 MIPS of CPU32 throughput, adequate for 4-axis point-to-point motion. The 5 V supply simplifies power design in industrial 24 V systems using a step-down regulator.
推荐
Aerospace Avionics Subsystem
The MC68332 family has historical DO-178B traceability in commercial avionics subsystems, and the ACEH25 variant supports cockpit instrumentation, flight-control actuators, and engine FADEC peripherals. Its 32-bit CPU32 core executes flight-control laws at 25 MHz with deterministic interrupt latency from the SIM module, and the TPU handles actuator PWM at rates up to 1 MHz. The 132-pin PQFP gives avionics designers sufficient I/O for ARINC 429 transceivers, discrete inputs, and relay-driver outputs. The -40C to +85C operating range meets RTCA DO-160 environmental Category A1 through A3 for cockpit equipment. Long-lifecycle NXP production support and pin-compatible M68332 variants are critical for 20+ year avionics programs.
推荐
Medical Diagnostic Equipment
The MC68332ACEH25 has been used in regulated medical devices such as blood analyzers, infusion pumps, and patient monitors where deterministic real-time response is critical. The 16-channel TPU handles infusion-pump stepper-motor control with sub-millisecond timing accuracy, while the 32-bit CPU32 runs the user-interface logic and serial communication to bedside monitors. The ROMless interface allows medical OEMs to lock firmware in external Flash for FDA 510(k) submission cycles. The 132-pin PQFP provides enough I/O for keypad input, LCD interface, RS-232 host communication, and isolated sensor inputs. NXP's long-term reliability data and AEC-Q100 qualification support IEC 60601-1 medical equipment safety standards, even though the part is not specifically medical-qualified.
推荐
Legacy Industrial PLC Module
The MC68332ACEH25 has been a workhorse CPU for legacy industrial PLC modules and process-control I/O racks since the 1990s. Its 32-bit CPU32 handles ladder-logic scan at 25 MHz, and the TPU generates PWM outputs for analog-output modules (4-20 mA loop drivers) with 12-bit effective resolution. The QSM provides isolated RS-485 ports for Modbus RTU communication to field instruments, while the SIM's chip-select logic allows glueless interfacing to external SRAM for tag databases and recipe storage. The 132-pin PQFP footprint and 5 V supply rail are compatible with existing PLC backplane designs, supporting brownfield migration scenarios where older M68332-based systems require spare parts. NXP's last-time-buy window makes lifetime-buy planning critical.
推荐
Automotive Body Control Module
The MC68332ACEH25 can serve automotive body control modules (BCM) that manage lighting, wipers, door locks, and accessory loads. Its 16 TPU channels generate PWM for interior dimming and exterior lighting fade, while the QSM SCI/UART interfaces to LIN sub-modules for seat controllers and mirror actuators. The 32-bit CPU32 handles CAN-body communication (via external CAN controller) at 100 kbps for body-network messaging. The ROMless design lets automotive Tier-1 OEMs store BCM calibration data in external Flash for regional variants. At 25 MHz, the device completes BCM scan loops within the 10 ms CAN cycle time, and the -40C to +85C operating range supports cabin-mounted BCM enclosures with limited thermal stress.
推荐
推荐产品汇总
工程参考数据： MC68332ACEH25 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | MC68332ACEH20 | MC68332AVEH25 | MC68332GCEH20 | MC68332ACEH16 |
|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 132-PQFP | 132-PQFP - same | 132-PQFP - same | 132-PQFP - same | 132-PQFP - same |
| Maximum Clock Frequency | 25 MHz | 20 MHz (-20%) | 25 MHz (same) | 20 MHz (-20%) | 16 MHz (-36%) |
| Core | CPU32 (32-bit) | CPU32 (32-bit) | CPU32 (32-bit) | CPU32 (32-bit) | CPU32 (32-bit) |
| Operating Temperature Range | -40C to +85C | -40C to +85C | -40C to +105C (+20C) | -40C to +85C | -40C to +85C |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V | 5 V |
| On-chip SRAM | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB |
| TPU Channels | 16 | 16 | 16 | 16 | 16 |
| QSM (SPI + SCI/UART) | Yes | Yes | Yes | Yes | Yes |
| Program Memory | ROMless (external) | ROMless (external) | ROMless (external) | ROMless (external) | ROMless (external) |
关键差异点
- Highest clock speed in M68332 PQFP family （对比 MC68332ACEH20)
- Standard automotive temperature grade vs extended （对比 MC68332AVEH25)
- Drop-in compatibility with the M68332 family （对比 MC68332ACEH16)
设计说明
The MC68332ACEH25 requires a stable 5 V +/- 10% supply with bulk decoupling of at least 22 uF tantalum or electrolytic plus 0.1 uF ceramic per VCC pin pair on the 132-pin PQFP. Place decoupling capacitors within 25 mm of the package, with the ceramic capacitor placed closer than the bulk. The SIM module draws peak current during external-bus cycles; ensure the 5 V regulator can deliver at least 200 mA sustained to avoid VCC droop below 4.5 V during DMA bursts.
The 132-pin PQFP package has a junction-to-ambient thermal resistance (theta_JA) of approximately 35 C/W on a 4-layer JEDEC test board. At full 25 MHz operation with all peripherals active, the device dissipates up to 0.6 W. For chassis-mounted ABS or ECU enclosures with limited airflow, derate ambient by 10-15 C and add thermal vias under the PQFP die-attach pad to the inner ground plane. Avoid mounting the PQFP near heat-generating components such as power MOSFETs.
Route the 32-bit external address/data bus with matched impedance (typically 50 ohm microstrip) and keep trace lengths matched to within 12 mm to avoid bus-timing skew. Use a 4-layer PCB with continuous ground plane beneath the MC68332ACEH25 footprint to control return-path inductance. Place external memory chips within 50 mm of the PQFP and use series damping resistors (22-33 ohm) on heavily-loaded address lines to reduce ringing. The MODE pins configure bus width and arbitration; follow the manufacturer's reference design exactly when interfacing to external SRAM or DRAM.
Do not assume the MC68332ACEH25 and MC68331CEH25 share the same firmware: the MC68331 has a 16-bit external data bus and lacks some SIM registers. Likewise, do not assume the 'E' and 'V' suffixes are interchangeable: the AVEH25 variant operates to +105C, not +85C. Always verify the exact suffix against the NXP datasheet before placing a replacement order. ROMless parts require external program memory; do not attempt to execute code from on-chip SRAM as if it were Flash.
合规信息
The MC68332ACEH25 is a legacy automotive-grade part that was originally designed before RoHS took effect; it uses SnPb lead finish and is RoHS non-compliant. AEC-Q100 qualification applies to the M68332 family. REACH compliance is per NXP's product declaration. Lead-free and halogen-free status are not specified on the manufacturer's product page; treat as 'unknown'.
